The quality of materials is good, but the plan is wrong at times (not always the location of the holes in the right place relative to pieces of wood), which is not reassuring. In addition, some screw insert had the effect of cracking wood ... But they are essential to make the top very stable module.
Either it was I who was wrong, which is not impossible although I doubt it, because the parts are numbered and screws also either there is a problem on this model ...